
This past weekend, a surprisingly large section of open water showed itself on The Pond. A steady stream of bubbles came up to the water’s surface. The bubbles were methane escaping the mud below.
The next morning, the temp at the cabin was -27F, so at ice level it was easily -30F. Much of the open area had frozen over, but a neat circular hole remained in the ice. From the hole, a trail led off across the pond’s snowy surface. One of the resident beavers had come out to explore the area. It followed all of the trails we made in the snow the previous day, and then it went off on its own, exploring at its leisure.

There were several times, where the trail dipped below the snow, and the beaver tunneled for quite a distance, before popping up again to the surface. I had never seen where a beaver had gone swimming in the snow. Most of these tunnels were near the cat tail stands, but not all.
The day after I followed the beaver trail, the open water had completely closed over. The methane is the clear culprit in the open water, especially such a large opening. As the bubbles rise to the surface, the ice thins due to the movement of the water. Most of the methane pocket locations are known, and those areas are avoided when anyone traverses The Pond. We are guessing that this opening was caused by a large, unknown pocket, that gave way. The bubbles that we watched coming up were in three distinct trails, but we wondered if the beaver had helped things along. Surely, the beaver knew about the location of the thinning ice, and kept one section open longer than the rest. Did their movement below, open up the large section we found? The beaver is an intriguing species of rodent.
March 25th, 2021 at 6:46 AM
Beavers are indeed cool.
Years ago we lived in a tiny pond cottage, in a nature lovers paradise — and had beavers about 100 feet from our back door. We even stumbled across a beaver literally at our feet one time —close enough to touch — when we were quietly walking along the bank of the stream.
March 25th, 2021 at 6:31 PM
I enjoy having them around, and don’t mind the annual post winter tree protection assessment. During the summer, I swear that our neighbors slap their tails when we are not giving them the attention they expect.
March 26th, 2021 at 2:27 PM
Hahaha — I bet!
I happened to see fresh beaver activity yesterday during a walk on the nearby C&O Canal.
March 26th, 2021 at 6:07 PM
I bet the Grand Old Ditch offers some nice offerings to beavers along its banks.
March 27th, 2021 at 3:56 AM
You know it! I’ll have to take some photos of the evidence the next time I’m down there.